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ISP Report

February 1st, 2007

Report Description

The ISP Market Share Report analyzes the distribution of web servers
in our surveys across different ISPs.
By classifying the
23128229
web servers by the ISPs' networks over which their traffic flows,
the report provides a view of the top ISPs on the Internet.

Purchase a list of web sites hosted on an ISPs' network:

Enter ISP name (e.g. peer1)

The following table lists the top 250 ISPs hosting the most servers on
their networks.

*
An ISP is said to host a server if its name servers have control
over the block of IP addresses that the server is in. Since a large
ISP might delegate subnets to a smaller one, a single web server
may be counted several times towards an ISP and its upstream providers.

Beginning with the February 2006 data set on which the March 1st, 2006
reports are based, a new algorithm was implemented for determining
which webservers are assigned to which ISP. This new algorithm catches
a significant number of servers which previously were unable to be
assigned to an ISP.